Step-by-step explanation:
2x^2 + x - 28
= 2x^2 - 8x + 7x - 28
= 2x(x-4) +7(x-4)
= (2x+7)(x-4)
2x+7 = 0 or x-4 = 0
x = -7/4 or x = 4
Answer: 11/48
Step-by-step explanation:
(11/12) / 4 = 11/12 * 1/4 = (11*1)/(12*4) = 11/48
The answer is C 1.312, -1.33, -1 3/9, -1 3/10
The answer is 72 (--> second choice).
I can prove it without calculator so you believe me:

20/100 = 0.20
0.20 * 9 = 1.8
9 - 1.8 = 7.2
The sale price of the DVD is $7.20.